> Why have authors?
Because someone needs something written, and they hire you to do it. Or because you want to write, and then others discover that they like what you write, and they want to help you write more. None of this requires copyright, and in fact copyright make some works illegal to author, therefore it restricts authorship.
> Or poets?
As above.
> Or scientists?
Someone needs research done. Someone wants to do research. Someone wants to fund research. None of this requires copyright.
> Or SWEs?
"Hey I need this software, can you write it for me? Here's how much I'm willing to pay for it."
Copyright has never been relevant in my career as a software developer. If anything, developers giving up their exclusive rights via free software licenses has been a massive boost for the entire field and everyone is building products atop someone else's work. That's a good thing!
I only with copyright didn't restrict our field so much.
> we don't work for free.
Indeed, someone needs my labor and they pay for it. Pretty simple.
> Or would you prefer to drive the aforementioned out of business.
Strawman. GP argued against particular business models that are reliant on copyright. That's not an argument against these entire fields, and indeed most of them would continue to exist without copyright.
But yes; I'm ok with letting people with poor business models go out of business.
Abandoning copyright would enable other business models that are currently difficult or impossible to conduct legally. I think the status quo is bad, because there are many services I can think of that would benefit end users (and which I would pay for) but which are not going to happen because of copyright.